Consider a $20-$year, $$300,000$ mortgage with a rate of $6\mathrm{.}75$ percent. Seven years into the mortgage, rates have fallen to $5\mathrm{.}45$ percent.

What would be the monthly saving to a homeowner from refinancing the outstanding mortgage balance at the lower rate?

Note: Do not round intermediate calculations. Round your answer to $2$ decimal places.

Savings